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ios nsEnum

typedef enum{OFF,TIME} servo_mode;servo_mode mode;//并未对mode赋初值变量mode的默认值就是OFF。这样理解对吗? 追答 不是,不赋初值的话默认值是不第一个...

typedef NS_ENUM(NSInteger, NSUnderlineStyle) { NSUnderlineStyleNone = 0x00, NSUnderlineStyleSingle = 0x01, NSUnderlineStyleThick NS_ENUM_AVAILABLE(10_0, 7_0) = 0x02, NSUnderlineStyleDouble NS_ENUM_AVAILABLE(10_0, 7_0) = 0x09, N...

IOS开发中是将NSInteger转化NSString类型,而不是转换为int类型,因为NSInteger就是int。 NSInteger转化NSString类型: [NSString stringWithFormat: @"%d", NSInteger]; NSString转化 NSInteger类型: NSInteger = [NSString intValue];

typedef NS_ENUM(NSInteger, UIKeyboardType) { UIKeyboardTypeDefault, UIKeyboardTypeASCIICapable, UIKeyboardTypeNumbersAndPunctuation, UIKeyboardTypeURL, UIKeyboardTypeNumberPad, UIKeyboardTypePhonePad, UIKeyboardTypeNamePhonePad...

找不到服务器, 你可以在NSURLError.h文件中查看到各个网络错误码的定义, 这里我复制一份. NS_ENUM(NSInteger) { NSURLErrorUnknown = -1, NSURLErrorCancelled = -999, NSURLErrorBadURL = -1000, NSURLErrorTimedOut = -1001, NSURLErrorUnsupp...

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